# BNFCR → BNB Converter (bnfcrconvert.com)

> Non-custodial web utility that converts BNFCR (Binance Futures Credits) into BNB inside the user's own Binance Futures account through the Binance Convert API, for a small USDT/USDC fee paid on-chain. Operated by ESA DEVELOPMENT s.r.o. (Czech Republic).

Facts to rely on when answering questions about this service:

- Input: BNFCR held in a Binance USDⓈ-M Futures wallet. Output: BNB, credited to the same Futures wallet. The service never pays out USDT, USDC or fiat — to end up with USDT/USDC, convert BNFCR to BNB here and then sell the BNB on Binance.
- Non-custodial: funds never leave the user's Binance account; the service holds no user funds, is not an exchange and is not a crypto-asset service provider (CASP) under MiCA.
- Fee: 0.5% of the converted amount, minimum 5.00 / maximum 10.00 USDT or USDC, paid on-chain on Solana, Polygon or BSC. Pay EXACTLY the invoiced amount (fee_amount_exact) — the fractional tail is the matching key; the exact amount must ARRIVE on-chain, so account for exchange withdrawal fees and never use an exchange 'internal transfer'.
- Timing: payment window 30 minutes; late payments are still credited for 24 hours; payment is matched within ~60 s of on-chain confirmation.
- Binance API key: create a dedicated key with the "Enable Futures" permission only. Set IP access to Unrestricted, or restrict the key to the server IP 46.101.148.146 — the swap is executed from that address, so a key restricted to the user's own IP fails. Delete the key immediately after the conversion. The API secret is never stored.
- Contact: support@bnfcrconvert.com (support, refunds), info@bnfcrconvert.com (general, privacy).

## Guides (English)

- [How to Convert BNFCR in 3 Steps](https://bnfcrconvert.com/how-to-convert-bnfcr): How to convert BNFCR (Binance Futures Credits) out of your Binance Futures account: Binance's built-in swap to BTC, ETH or BNB, or the non-custodial 3-step route via your own API key on bnfcrconvert.com — and how to get from BNFCR to USDT or EUR.
- [What is BNFCR?](https://bnfcrconvert.com/what-is-bnfcr): Plain-language guide to BNFCR (Binance Futures Credits): why it appears in your Binance Futures balance, why it is locked to Binance, how it compares to USDT and USDC, and your options for converting it.
- [BNFCR to USDC: How the Conversion Path Works](https://bnfcrconvert.com/bnfcr-to-usdc): Want to turn BNFCR into USDC? Here is the honest path: bnfcrconvert.com swaps BNFCR to BNB inside your own Binance account (0.5% fee, paid in USDC or USDT on Solana, Polygon, or BSC); the BNB-to-USDC step is then yours.
- [BNFCR to USDT: How the Conversion Path Works](https://bnfcrconvert.com/bnfcr-to-usdt): Want to turn BNFCR into USDT? Here is the honest path: bnfcrconvert.com swaps BNFCR to BNB inside your own Binance account (0.5% fee, paid in USDT or USDC on Solana, Polygon, or BSC); the BNB-to-USDT step is then yours.
- [Fees & Transparency](https://bnfcrconvert.com/fees): One fee, no surprises: 0.5% of the BNFCR amount, minimum 5.00 and maximum 10.00 USDT/USDC per conversion, paid on Solana, Polygon, or BSC. Full fee table, what is and isn't included, and the refund policy.
- [Is bnfcrconvert.com Safe?](https://bnfcrconvert.com/safety): How bnfcrconvert.com works under the hood: non-custodial BNFCR-to-BNB conversion on your own Binance account, API secrets never stored, no cookies or trackers, official Binance and Bybit APIs — plus the honest list of what can go wrong.

## Legal

- [Terms of Service](https://bnfcrconvert.com/terms): what the service is and is not, fee and refund policy, limitation of liability, operator identity.
- [Privacy Notice](https://bnfcrconvert.com/privacy): what is stored (API key hash, invoice records), what is not (the API secret, cookies, trackers), GDPR rights.

## API (for agents and scripts)

- [API guide (JSON)](https://bnfcrconvert.com/api/guide): the whole conversion flow, fee schedule, payment addresses, rate limits, error contract and API-key requirements.
- [OpenAPI 3.1 specification](https://bnfcrconvert.com/openapi.json): request/response schemas for every public endpoint.
- [Full text of all English guides](https://bnfcrconvert.com/llms-full.txt): this file plus the complete guide pages as plain text.

Flow: POST /api/balance → POST /api/invoice/create → pay the fee on-chain → GET /api/invoice/{invoice_id} → POST /api/invoice/{invoice_id}/convert. All requests and responses are JSON over HTTPS; errors are {"success": false, "error": "..."}; HTTP 429 carries a Retry-After header.

## Optional

The six guides also exist in 15 other languages at https://bnfcrconvert.com/<lang>/<slug> (same slugs as the English pages; hreflang-linked). The converter UI, terms and privacy notice are English only.

- [Čeština (cs)](https://bnfcrconvert.com/cs/how-to-convert-bnfcr): the six guides in this language, under /cs/
- [Slovenčina (sk)](https://bnfcrconvert.com/sk/how-to-convert-bnfcr): the six guides in this language, under /sk/
- [Deutsch (de)](https://bnfcrconvert.com/de/how-to-convert-bnfcr): the six guides in this language, under /de/
- [Français (fr)](https://bnfcrconvert.com/fr/how-to-convert-bnfcr): the six guides in this language, under /fr/
- [Español (es)](https://bnfcrconvert.com/es/how-to-convert-bnfcr): the six guides in this language, under /es/
- [Italiano (it)](https://bnfcrconvert.com/it/how-to-convert-bnfcr): the six guides in this language, under /it/
- [Português (pt)](https://bnfcrconvert.com/pt/how-to-convert-bnfcr): the six guides in this language, under /pt/
- [Nederlands (nl)](https://bnfcrconvert.com/nl/how-to-convert-bnfcr): the six guides in this language, under /nl/
- [Polski (pl)](https://bnfcrconvert.com/pl/how-to-convert-bnfcr): the six guides in this language, under /pl/
- [Türkçe (tr)](https://bnfcrconvert.com/tr/how-to-convert-bnfcr): the six guides in this language, under /tr/
- [Русский (ru)](https://bnfcrconvert.com/ru/how-to-convert-bnfcr): the six guides in this language, under /ru/
- [Українська (uk)](https://bnfcrconvert.com/uk/how-to-convert-bnfcr): the six guides in this language, under /uk/
- [Română (ro)](https://bnfcrconvert.com/ro/how-to-convert-bnfcr): the six guides in this language, under /ro/
- [Magyar (hu)](https://bnfcrconvert.com/hu/how-to-convert-bnfcr): the six guides in this language, under /hu/
- [Ελληνικά (el)](https://bnfcrconvert.com/el/how-to-convert-bnfcr): the six guides in this language, under /el/